Set MessageEvent.source to the newly created port for shared workers' connect events

LayoutTests/fast/events/constructors/message-event-constructor.html

Index: LayoutTests/fast/events/constructors/message-event-constructor.html
diff --git a/LayoutTests/fast/events/constructors/message-event-constructor.html b/LayoutTests/fast/events/constructors/message-event-constructor.html
index 20155cdbc4c9faa9bed80573ebbb6e21e2a0be53..4e6e5ee4dcd1f3376a98c270029ad72080334c44 100644
--- a/LayoutTests/fast/events/constructors/message-event-constructor.html
+++ b/LayoutTests/fast/events/constructors/message-event-constructor.html
@@ -71,9 +71,14 @@ shouldThrow("new MessageEvent('eventType', { get data() { throw 'MessageEvent Er
 shouldBe("new MessageEvent('eventType', { source: window }).source", "window");
 shouldBe("new MessageEvent('eventType', { source: this }).source", "this");
 
+// MessagePort objects.
+var channel = new MessageChannel();
+shouldBe("new MessageEvent('eventType', { ports: [channel.port1], source: channel.port1 }).source", "null");

[do-not-use, 2013/08/19 20:47:55]

I added this check as well since I assume this is a bug in the specification and
we'll likely fix this later.

+
 // Non-window objects.
 shouldBe("new MessageEvent('eventType', { source: test_object }).source", "null");
 shouldBe("new MessageEvent('eventType', { source: document }).source", "null");
+shouldBe("new MessageEvent('eventType', { source: document.body }).source", "null");

[do-not-use, 2013/08/19 20:47:55]

Added a Node check as suggested.

 shouldBe("new MessageEvent('eventType', { source: undefined }).source", "null");
 shouldBe("new MessageEvent('eventType', { source: null }).source", "null");
 shouldBe("new MessageEvent('eventType', { source: false }).source", "null");
@@ -90,7 +95,6 @@ shouldThrow("new MessageEvent('eventType', { get source() { throw 'MessageEvent
 
 // ports is passed.
 // Valid message ports.
-var channel = new MessageChannel();
 var channel2 = new MessageChannel();
 shouldBe("new MessageEvent('eventType', { ports: [channel.port1, channel.port2, channel2.port1] }).ports[0]", "channel.port1");
 shouldBe("new MessageEvent('eventType', { ports: [channel.port1, channel.port2, channel2.port1] }).ports[1]", "channel.port2");